What neurotransmitter appears to play a significant role in the dependence potential of nicotine?

During a geriatrics conference, discussion focused on internal aging, specifically, brain size and cognitive decline. Which of the following summaries is most notable for this discussion?

a) The brain will remain the same size and cognitive function can remain the same if the person keeps active. b) Brain structure and cognition will decline slightly. c) Brain structure will drastically be reduced and cognitive functioning will decrease. d) The brain becomes smaller and lighter with age but will retain its structure and function in the absence of disease.

Which of these constructive coping techniques focuses on altering the stressful situation itself?

a. Problem-focused coping c. Healthy-focused coping b. Emotion-focused coping d. Appraisal-focused coping